Chapter 501: Agreeing (Second Update)

"This is the underground city alarm system, which normally only goes off when the underground city faces a matter of life and death. I haven't heard this sound in many years. It's been 62 years, and unexpectedly, I'm hearing it again,"

Karn's aged face was filled with emotion.

"That long ago? What does that mean?"

Su Mo asked, driven by curiosity.

"It means the artificial intelligence Black Cosmos is now under threat, hence the alarm. If I'm not mistaken, the defense forces of the underground city should all be regrouping at this moment, and we should be safe for a short period,"

Karn explained after a moment of thought.

Upon hearing Karn's explanation, Su Mo and the others could temporarily set their worries aside.

"How odd. Who could be attacking the center of the underground city?"

Lin Ming was also immensely puzzled.

"Isn't it your people?"

Karn asked with confusion.